Procedure Day Two
Read the book More or Less by Stuart J. Murphy. The main character, Eddie, guesses the ages of people in a carnival game. He does not make random guesses but rather he asks the right questions to narrow down the choices of what the answer could be. This is a problem solving skill that you want your students to practice. Even though this book eventually works with numbers higher than some of your students will know, the concept is the same. As you read, write the numbers on the board in a number line fashion that Eddie is working with. For example, he finds out that the girl is younger than ten and older than 7. So if you write the numbers 7, 8,9,10 the students will see that the girl is either nine or ten years old.
Pass out number lines 1-10 to each student. Notice that when you move to the right (like when you are reading) the numbers are larger and indicate more. When you move to the left the numbers are smaller or mean less. As a challenge you may want to switch to the 1-20 number lines at some point.
Now play a Mystery Number Game! To play, the student uses the index finger on each hand. The left index finger is placed on the number given in the beginning of the game and uses the index finger of the right hand to move up or down the number line.
Here’s are examples:
1. Can you tell me the number that is two more than five? Left finger is on the number five. Right finger counts two numbers to the right. The answer is seven!
2. I am thinking of a number between 1 and 10. (The number is 8.) Let’s suppose someone guesses 4. The index finger goes on the number 4. Then I say it is more than 4. So they look to the right of the number 4 and see the choices they have. Now someone asks if it is the number 9. I tell them the number is less than 9. So now they have one finger on the four and one on the nine and can easily see the remaining choices.
Remember that there are always teachable moments when you can ask the students more or less questions:
- Who shot more baskets when you played basketball?
- Are their more chairs or fewer (less) chairs than the number of students in the room?
- How many more pencils do we need?
Evaluate each student individually or in small groups using the number line and playing the Mystery Number Game.